Inshore movement and habitat use by juvenile sablefish, Anoplopoma fimbria, implanted with acoustic tags in southeast Alaska
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Inshore movement and habitat use by juvenile sablefish, Anoplopoma fimbria, implanted with acoustic tags in southeast Alaska

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  • Personal Author:
  • Corporate Authors:
    Alaska Fisheries Science Center (U.S.)
  • NOAA Program & Office:
  • Description:
    Acoustic tags were used to monitor age-0 and age-1 juvenile sablefish (Anoplopoma fimbria) inshore habitat use in Southeast Alaska. A total of 30 acoustic tags were surgically implanted in juvenile sablefish and released in St. John Baptist Bay during October 2003 (n = 13, mean fork length (FL) 241.9 mm) and May 2004 (n = 17; mean FL 322.1 mm). Manual relocation of acoustically tagged sablefish was conducted opportunistically from the NOAA ship John N. Cobb and a skiff during 2003 and 2004 using an acoustic tracking receiver. Remote relocation of acoustically tagged sablefish was conducted using hydrophone buoys deployed below the water's surface in St. John Baptist Bay during 2003 and 2004. Results indicate that acoustic tagging was an efficient method for determining habitat utilization of juvenile sablefish in St. John Baptist Bay. All acoustically tagged juvenile sablefish were relocated at least once using either manual relocation methods or by remotely deployed hydrophone buoys; multiple records were available from more than half of the tagged sablefish. Results indicated that age-0 juvenile sablefish utilized relatively shallow waters of the inner bay (average water depth 18.6 m), while age-1 juvenile sablefish utilize the relatively deeper waters of the outer bay (average water depth 58.9 m). Age-0 juvenile sablefish were predominantly located near the bottom but they also utilized the entire water column, making frequent excursions to the surface.
  • Content Notes:
    [D. Courtney and T.L. Rutecki].

    "March 2011."

    Also available online in PDF format via AFSC and the NOAA Central Library.

    Includes bibliographical references (pages 17-18).

  • Keywords:
  • Series:
    AFSC processed report ; 2011-01
  • Document Type:
    Technical Report
  • Place as Subject:
    Alaska
  • Rights Information:
    Public Domain
  • Compliance:
    Library
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